题目内容

All the bacteria are not harmful. 所有细菌对人体无害。 ()

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写作的技巧比起其他的技巧来相当困难。 The technique of writing is rather difficult compared with that of the other arts. ()

They always want eggs for breakfast. ()

透镜组是由多片的凸凹透镜组成的，它的作用是()。

A. 消除视差
B. 减弱视差
C. 利用各种透镜的性能互相抵消，减弱像差，提高结像质量
D. 彻底消除像差

Detroit has been known as the automobile capital of the world. ()